I would like to try and install Jitsi client. I have used the web 'Jitsi meet' service through Firefox and found that it works but voice is distorted.
I have downloaded Jitsi nightly (AMD64) and attempted to install on Ubuntu 15.10 64bit. I have listed http://download.jitsi.org/nightly/deb in my included repositories.
When trying to install I get an 'untrusted packages' message. When I acknowledge the message with OK, the install process closes. Exactly the same 'untrusted packages' warning when updating my system. The packages are related to Jitsi.
Can anybody help me get Jitsi client running please?